CLF10040T-2R2N-H Equivalent & Substitute Parts

Part Overview

The CLF10040T-2R2N-H is a 2.2 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 7.5 A continuous current with a DC resistance of 9.7mOhm. This surface mount component operates across -40°C to 125°C and is ROHS3 compliant. The part is designated as Not For New Designs, indicating it has been superseded in TDK's product portfolio. Identifying equivalent substitute parts is necessary for design continuity, inventory management, and ensuring long-term supply chain reliability for existing applications.

Substiute Parts

CLF10040T-2R2N-H

TDK CorporationIn Stock: 1536CLF10040T-2R2N-H Datasheet

Current PartRFQ

CLF10060NIT-2R2N-D

TDK CorporationIn Stock: 1877CLF10060NIT-2R2N-D Datasheet

MFR RecommendedRFQ

1274AS-H-2R2N=P3

Murata ElectronicsIn Stock: 9491274AS-H-2R2N=P3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CLF10040T-2R2N-H is determined by the following critical parameters:

• Inductance Value: 2.2 µH (with ±30% tolerance allowance)
• Current Rating: Minimum 7.5 A continuous current capability
• DC Resistance: Maximum 9.7mOhm to maintain thermal and efficiency characteristics
• Core Type: Ferrite drum core, wirewound construction
• Shielding: Shielded configuration required
• Mounting: Surface mount technology
• Saturation Current (Isat): Minimum 5 A to prevent core saturation under operating conditions

Both identified substitute parts meet these core electrical and mechanical requirements while offering improved or equivalent performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

CLF10060NIT-2R2N-D (TDK Corporation)

This substitute offers higher current rating (8.5 A vs. 7.5 A) and improved saturation current (9 A vs. 5 A), providing enhanced performance margin. DC resistance is lower at 9.23mOhm maximum. Extended operating temperature range (-55°C to 150°C) supports broader environmental applications. AEC-Q200 automotive qualification is included. Product status is Last Time Buy, indicating limited future availability. Physical dimensions are marginally larger (10.10mm x 10.00mm vs. 10.00mm x 9.70mm), and height increases to 6.30mm. Packaging is Cut Tape (CT) rather than Tape & Reel (TR).

1274AS-H-2R2N=P3 (Murata Electronics)

This substitute provides the highest saturation current (12.6 A) and maintains DC resistance at 9.6mOhm maximum. Current rating is 8 A, exceeding the original specification. Product status is Active, ensuring ongoing availability and supply chain stability. Packaging remains Tape & Reel (TR), matching the original format. Physical dimensions are identical to the main part (10.00mm x 10.00mm), with height at 5.00mm. Operating temperature range is not specified in available data. This option provides the most direct form-fit-function compatibility.

Frequently Asked Questions (FAQ)

Q: Can CLF10060NIT-2R2N-D be used as a direct replacement for CLF10040T-2R2N-H?

A: CLF10060NIT-2R2N-D meets all electrical substitution criteria with superior current and saturation ratings. However, physical dimensions differ: height increases from 4.10mm to 6.30mm, and footprint expands from 10.00mm x 9.70mm to 10.10mm x 10.00mm. PCB layout and clearance verification is required before implementation.

Q: What are the advantages of 1274AS-H-2R2N=P3 over the original part?

A: The Murata part maintains identical footprint dimensions (10.00mm x 10.00mm), offers higher saturation current (12.6 A), and carries Active product status for long-term supply assurance. Packaging format (Tape & Reel) matches the original specification.

Q: Are all three parts ROHS3 compliant?

A: Yes. CLF10040T-2R2N-H, CLF10060NIT-2R2N-D, and 1274AS-H-2R2N=P3 are all ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).

Q: What is the impact of packaging format differences?

A: CLF10040T-2R2N-H and 1274AS-H-2R2N=P3 are supplied in Tape & Reel (TR) format. CLF10060NIT-2R2N-D is supplied in Cut Tape (CT) format. This affects handling, storage, and automated assembly processes but does not impact electrical performance.

Q: Why is CLF10040T-2R2N-H marked as Not For New Designs?

A: This designation indicates the part has been superseded in TDK's active product line. Existing designs may continue using this part, but new designs should transition to current alternatives such as CLF10060NIT-2R2N-D or equivalent products.

Q: How do saturation current differences affect circuit performance?

A: Saturation current (Isat) defines the threshold at which core saturation begins, causing inductance degradation. CLF10040T-2R2N-H has Isat of 5 A, while substitutes offer 9 A and 12.6 A respectively. Higher saturation current provides greater operational margin and reduces risk of unintended saturation under transient conditions.

Q: Are there thermal considerations when selecting between these parts?

A: DC resistance values are comparable (9.7mOhm, 9.23mOhm, and 9.6mOhm), resulting in similar I²R losses. CLF10060NIT-2R2N-D supports extended temperature range (-55°C to 150°C) versus the original (-40°C to 125°C), offering advantage in extreme environment applications.